<?php
/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */

/**
 * Load requested plugins
 *
 * @param array $plugins
 */

// $plugins

function smarty_core_load_plugins($params, &$smarty) {

  foreach ($params['plugins'] as $_plugin_info) {
    list($_type, $_name, $_tpl_file, $_tpl_line, $_delayed_loading) = $_plugin_info;
    $_plugin = &$smarty->_plugins[$_type][$_name];

        /*
         * We do not load plugin more than once for each instance of Smarty.
         * The following code checks for that. The plugin can also be
         * registered dynamically at runtime, in which case template file
         * and line number will be unknown, so we fill them in.
         *
         * The final element of the info array is a flag that indicates
         * whether the dynamically registered plugin function has been
         * checked for existence yet or not.
         */
    if (isset($_plugin)) {
      if (empty($_plugin[3])) {
        if (!is_callable($_plugin[0])) {
          $smarty->_trigger_fatal_error("[plugin] $_type '$_name' is not implemented", $_tpl_file, $_tpl_line, __FILE__, __LINE__);
        } else {
          $_plugin[1] = $_tpl_file;
          $_plugin[2] = $_tpl_line;
          $_plugin[3] = true;
          if (!isset($_plugin[4])) $_plugin[4] = true; /* cacheable */
        }
      }
      continue;
    } else if ($_type == 'insert') {
            /*
             * For backwards compatibility, we check for insert functions in
             * the symbol table before trying to load them as a plugin.
             */
        $_plugin_func = 'insert_' . $_name;
        if (function_exists($_plugin_func)) {
          $_plugin = array($_plugin_func, $_tpl_file, $_tpl_line, true, false);
          continue;
        }
      }

    $_plugin_file = $smarty->_get_plugin_filepath($_type, $_name);

    if (! $_found = ($_plugin_file != false)) {
      $_message = "could not load plugin file '$_type.$_name.php'\n";
    }

        /*
         * If plugin file is found, it -must- provide the properly named
         * plugin function. In case it doesn't, simply output the error and
         * do not fall back on any other method.
         */
    if ($_found) {
      include_once $_plugin_file;

      $_plugin_func = 'smarty_' . $_type . '_' . $_name;
      if (!function_exists($_plugin_func)) {
        $smarty->_trigger_fatal_error("[plugin] function $_plugin_func() not found in $_plugin_file", $_tpl_file, $_tpl_line, __FILE__, __LINE__);
        continue;
      }
    }
        /*
         * In case of insert plugins, their code may be loaded later via
         * 'script' attribute.
         */
    else if ($_type == 'insert' && $_delayed_loading) {
        $_plugin_func = 'smarty_' . $_type . '_' . $_name;
        $_found = true;
      }

        /*
         * Plugin specific processing and error checking.
         */
    if (!$_found) {
      if ($_type == 'modifier') {
                /*
                 * In case modifier falls back on using PHP functions
                 * directly, we only allow those specified in the security
                 * context.
                 */
        if ($smarty->security && !in_array($_name, $smarty->security_settings['MODIFIER_FUNCS'])) {
          $_message = "(secure mode) modifier '$_name' is not allowed";
        } else {
          if (!function_exists($_name)) {
            $_message = "modifier '$_name' is not implemented";
          } else {
            $_plugin_func = $_name;
            $_found = true;
          }
        }
      } else if ($_type == 'function') {
                /*
                 * This is a catch-all situation.
                 */
          $_message = "unknown tag - '$_name'";
        }
    }

    if ($_found) {
      $smarty->_plugins[$_type][$_name] = array($_plugin_func, $_tpl_file, $_tpl_line, true, true);
    } else {
    // output error
      $smarty->_trigger_fatal_error('[plugin] ' . $_message, $_tpl_file, $_tpl_line, __FILE__, __LINE__);
    }
  }
}

/* vim: set expandtab: */

?>
